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    Living cationic polymerization and polyhomologation: an ideal combination to synthesize functionalized polyethylene–polyisobutylene block copolymers

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    Type
    Article
    Authors
    Zhang, Hefeng
    Banerjee, Sanjib
    Faust, Rudolf
    Hadjichristidis, Nikolaos cc
    KAUST Department
    Physical Sciences and Engineering (PSE) Division
    KAUST Catalysis Center (KCC)
    Polymer Synthesis Laboratory
    Date
    2015-12-17
    Permanent link to this record
    http://hdl.handle.net/10754/592609
    
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    Abstract
    A series of hydroxyl-terminated polyisobutylene-b-polyethylene (PIB-b-PE-OH) copolymers were synthesized by combining living cationic polymerization and polyhomologation. Allyl-terminated PIBs, synthesized by living cationic polymerization, were hydroborated with BH3·THF to produce 3-arm boron-linked stars, PIB3B, which served as macroinitiators for the in situ polyhomologation of dimethylsulfoxonium methylide. The resulting 3-arm star block copolymers, (PIB-b-PE)3B, were oxidized/hydrolysed to afford PIB-b-PE-OH. Characterization of all intermediates and final products by high temperature gel permeation chromatography (HT-GPC) and proton nuclear magnetic resonance spectroscopy (1H NMR) revealed the well-defined character of the copolymers. The thermal properties of the copolymers were studied by differential scanning calorimetry (DSC).
    Citation
    Living cationic polymerization and polyhomologation: an ideal combination to synthesize functionalized polyethylene–polyisobutylene block copolymers 2016 Polym. Chem.
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Polym. Chem.
    ISSN
    1759-9954
    1759-9962
    DOI
    10.1039/C5PY01892G
    Additional Links
    http://xlink.rsc.org/?DOI=C5PY01892G
    ae974a485f413a2113503eed53cd6c53
    10.1039/C5PY01892G
    Scopus Count
    Collections
    Articles; Physical Sciences and Engineering (PSE) Division; KAUST Catalysis Center (KCC)

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